A fixed deposit (FD) is a financial instrument offered by banks and other financial institutions where an individual or entity can deposit a sum of money for a fixed period of time at a predetermined interest rate. The content of a fixed deposit typically includes the following key elements:

1. Principal Amount: This refers to the initial amount of money deposited by the individual or entity into the fixed deposit account. The principal amount remains intact throughout the tenure of the deposit and is not withdrawn until the maturity date.
2. Tenure: The tenure of the fixed deposit specifies the duration for which the money will remain invested. It can range from a few months to several years, depending on the terms and conditions set by the bank or financial institution.
3. Interest Rate: The interest rate is the percentage at which the fixed deposit earns interest over its tenure. This rate is determined at the time of opening the FD and remains fixed for the entire duration of the deposit. The interest earned is generally higher than that of a regular savings account.
4. Interest Payment Frequency: The fixed deposit can have different interest payment options, such as monthly, quarterly, semi-annually, annually, or cumulative. In a cumulative FD, the interest is reinvested and paid along with the principal at maturity.
5. Maturity Amount: The maturity amount is the total sum that the fixed deposit will be worth at the end of its tenure. It is calculated by adding the principal amount and the accumulated interest.